CN213727719U - Linear sieve and sieving equipment - Google Patents

Abstract

The utility model relates to a material screening field discloses a rectilinear sieve and screening equipment, wherein, the rectilinear sieve includes the box, the screen cloth, negative pressure dust collector and the vibrating device who is used for making the box vibration, the box has the screening cavity, the feed inlet, the material loading export, sieve unloading export and dust removal mouth, the screen cloth sets up and separates for material loading cavity and sieve unloading cavity with the screening cavity in the screening cavity, feed inlet and material loading export communicate with material loading cavity respectively, sieve unloading export and sieve unloading cavity intercommunication, negative pressure dust collector connects in the dust removal mouth, with provide the dust of the interior production of negative pressure suction screening cavity and handle the dust through the dust removal mouth. The negative pressure dust suction device can form a negative pressure passage by utilizing the dust removal port, the feed port, the oversize material outlet and the undersize material outlet, so that dust is not diffused outwards but is collected in the screening chamber and discharged, and the overflow of the dust is thoroughly eliminated.

Description

Linear sieve and sieving equipment

Technical Field

The application relates to the field of material screening, in particular to a linear screen and screening equipment.

Background

The linear sieve is the material screening plant commonly used, and it sieves the material for oversize material and sieve unloading through the screen cloth that sets up in the box of vibration, at the screening in-process, because the collision of material and the vibration of box, can inevitably produce the dust to these dusts can be along with the discharge of oversize material and sieve unloading excessive in from the box. Due to the environmental protection requirement, the dust emission needs to be controlled, and the environmental pollution is avoided. In the prior art, a dust suction pipeline is usually arranged at the collection position of the oversize material and the undersize material, and dust discharged along with the oversize material and the undersize material is sucked away and intensively treated. However, at the collection position of the material on the screen and the material off the screen, the dust overflows to the environment, so that the overflow of the dust cannot be thoroughly eliminated, and the pollution to the working environment is still caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that the excessive dust can not thoroughly be eliminated that prior art exists, provide a rectilinear sieve, this rectilinear sieve can thoroughly eliminate the excessive of dust.

In order to realize above-mentioned purpose, this application provides a rectilinear sieve on the one hand, wherein, rectilinear sieve includes box, screen cloth, negative pressure dust collector and is used for making the vibrating device of box vibration, the box has screening cavity, feed inlet, oversize material export and sieve unloading export, the screen cloth sets up in the screening cavity in order to incite somebody to action the screening cavity is separated for oversize material cavity and sieve unloading cavity, the feed inlet with the oversize material export respectively with oversize material cavity intercommunication, sieve unloading export with sieve unloading cavity intercommunication, the box still be provided with the dust removal mouth of screening cavity intercommunication, negative pressure dust collector connect in the dust removal mouth, with through the dust removal mouth provides the negative pressure suction the dust of the production in the screening cavity is handled the dust.

Optionally, the negative pressure dust removal device includes a filter and a negative pressure pipeline, the filter is connected to the dust removal port, and the negative pressure pipeline is connected to an outlet of the filter.

Optionally, the negative pressure dust collector comprises a plurality of filters, and the filters are configured to be opened individually, wherein: the negative pressure dust removal device comprises a plurality of negative pressure pipelines which are respectively in one-to-one correspondence with the filters; and/or the box body is provided with a plurality of dust removing openings which correspond to the filters one to one.

Optionally, the dust removal port is arranged at the top of the box body.

Optionally, the linear sieve includes an oversize material discharging pipe and an oversize material discharging pipe extending from the oversize material outlet and the oversize material outlet, and the oversize material discharging pipe both have a downward discharging discharge port and are arranged from a first flexible material guiding part at the discharge port.

Optionally, the vibration device includes a vibration motor for providing vibration and a support frame for elastically supporting the box body.

Optionally, the box is the cuboid, the feed inlet sets up the top of the one end of box, the material outlet on the sieve with the material outlet under the sieve sets up the lateral part of the other end of box.

Optionally: the screen is arranged such that the height of the undersize chamber increases from the feed inlet to the undersize outlet; and/or the box body is obliquely arranged, so that the end where the feed inlet is located is higher than the ends where the oversize material outlet and the screen material outlet are located.

Optionally, the screen is planar and is arranged obliquely to the bottom wall of the box body.

The application still provides a screening equipment, wherein, screening equipment include the linear sieve of this application and be used for to the compounding jar of feed inlet feed, the exit of compounding jar is provided with and extends to the flexible guide spare of second of screen cloth.

Through the technical scheme, the negative pressure dust suction device can form a negative pressure passage by utilizing the dust removal port, the feed inlet, the oversize material outlet and the screening material outlet, so that dust at the feed inlet, the oversize material outlet and the screening material outlet cannot diffuse outwards but is collected in the screening chamber and is discharged through the dust removal port, and the overflow of the dust is thoroughly eliminated.

Drawings

Figure 1 is a schematic diagram illustrating the construction of one embodiment of the screening apparatus of the present application.

Description of the reference numerals

10-box body, 11-feed inlet, 12-oversize outlet, 13-undersize outlet, 14-oversize chamber, 15-undersize chamber, 16-dedusting outlet, 17-oversize discharging pipe, 18-undersize discharging pipe, 20-screen, 30-negative pressure dedusting device, 31-filter, 32-negative pressure pipeline, 33-three-way valve, 34-negative pressure header pipe, 40-vibrating device, 41-vibrating motor, 42-support frame, 50-first flexible material guiding piece, 60-second flexible material guiding piece, 70-mixing tank, 80-oversize material barrel and 90-undersize material barrel.

Detailed Description

The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration and explanation only, and are not intended to limit the present application.

In this application, where the contrary is not stated, the use of directional words such as "upper, lower, left and right" generally means upper, lower, left and right as illustrated with reference to the accompanying drawings; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to one aspect of the present application, there is provided a linear screen, wherein the linear screen comprises a case 10, a screen 20, a negative pressure dust removing device 30, and a vibration device 40 for vibrating the case 10, the box 10 has a screening chamber, a feed inlet 11, an oversize outlet 12 and an undersize outlet 13, the screen 20 is disposed in the screening chamber to divide the screening chamber into an oversize chamber 14 and an undersize chamber 15, the feed inlet 11 and the oversize outlet 12 are respectively communicated with the oversize chamber 14, the sieve discharging outlet 13 is communicated 15 with the sieve discharging chamber, the box body 10 is also provided with a dust removing opening 16 communicated with the sieve discharging chamber, the negative pressure dust removing device 30 is connected with the dust removing opening 16, to provide negative pressure through the dust extraction port 16 to draw the generated dust in the screening chamber and to process the dust.

As shown by the double arrows in fig. 1, in the linear sieve of the present application, the negative pressure dust suction device 30 can form a negative pressure passage by using the dust removal port 16, the feed port 11, the oversize outlet 12 and the undersize outlet 13, so that the dust at the feed port 11, the oversize outlet 12 and the undersize outlet 13 is not diffused outwards but collected in the sieving chamber and is discharged completely through the dust removal port 16, thereby completely eliminating the overflow of the dust.

Since the dust removing port 16 is connected to the box body 10, it is equivalent to extend the dust removing port 16 to the feed port 11, the oversize outlet 12 and the undersize outlet 13. Not only can the dust in the screening chamber be treated and not be drifted out, but also the dust which has overflow tendency at the joint of the upstream equipment and the downstream equipment can be sucked back for treatment. The dust is generated in the following places: the export of compounding jar, sieve machine are inside and connect the storage bucket, consequently, the linear sieve of this application can all be received the box with these several local dusts that produce the dust and handle.

The negative pressure dust removing device 30 may take any suitable form as long as it can provide negative pressure and process dust. Preferably, the dust may be filtered during the suction process to remove large particle dust and the fine dust may be further collected for disposal in order to pre-treat the dust. For this, the negative pressure dust removing device 30 may include a filter 31 and a negative pressure pipe 32, the filter 31 being connected to the dust removing port 16, the negative pressure pipe 32 being connected to an outlet of the filter 31. When the dust removing device is used, dust discharged from the dust removing opening 16 is firstly filtered by the filter 31, and fine dust can be continuously pumped out and centralized by the negative pressure pipeline 32. Wherein the negative pressure conduit 32 may be connected to a negative pressure source to provide negative pressure.

As can be appreciated, in the prior art, the negative pressure required to suck the dust from the dust overflow (open space) is relatively large. In the present application, the dust does not overflow, and a relatively closed space is formed by the space of the box body 10 and the corresponding feed inlet 11, the oversize material outlet 12 and the undersize material outlet 13, so that negative pressure is formed conveniently, and the required suction force is greatly reduced. Also, by providing the filter 31 at the dust removal port 16, most of the dust can be handled, the amount of fine dust is small, and the suction force required to collect the fine dust is also small. Therefore, the required negative pressure suction force is greatly reduced compared with the prior art.

In addition, preferably, the negative pressure dust removing device 30 may include a plurality of the filters 31, and the plurality of the filters 31 are configured to be individually opened so as to alternately use the filters 31, so that at least other filters 31 can be used without stopping and interrupting the generation when maintaining the partial filters 31.

The outlets of the filters 31 may be connected in parallel to the same negative pressure pipeline 32, and may be separated into different compartments at the interface of the negative pressure pipeline 32 for interfacing with different filters 31. Preferably, the negative pressure dust removing device 30 includes a plurality of negative pressure pipes 32 corresponding to the plurality of filters 31 one to one, respectively, for manufacturing and maintenance.

Alternatively, the inlets of multiple filters 31 may be connected in parallel to the same dust removal port 16, and the dust removal port 16 may be partitioned into different compartments to interface with different filters 31. Preferably, the box 10 is provided with a plurality of dust removing openings 16 corresponding to the plurality of filters 31 one by one, and in this preferred embodiment, the negative pressure effect can be reduced by avoiding the formation of an excessively large dust removing opening 16, and the manufacturing and maintenance are facilitated.

In the embodiment shown in fig. 1, two filters 31 may be provided for efficiency and cost reasons, the two filters 31 are respectively communicated with the two dust removing ports 16 and respectively suck through two negative pressure pipes 32, the two negative pressure pipes 32 are connected to a negative pressure manifold 34 through a three-way valve 33, and the negative pressure manifold 34 is connected to a negative pressure source. When the device is used, the three-way valve 33 can be switched to alternately use the two filters 31, when one filter 31 works, the other filter 31 does not work and loses pressure balance due to loss of negative pressure, particles are not adsorbed any more, and materials adsorbed on the surface of the filter 31 fall into the screening chamber from the corresponding dust removal port 16 under the action of vibration of the filter 31 along with the box body 10 and are discharged as screening materials in the screening process.

In this application, the screening process does, and the material gets into and falls on screen cloth 20 from feed inlet 11, and when box 10 vibrated, the material was through vibrating thereupon and the tiling on screen cloth 20 to the screening is oversize material and undersize material. To reduce the likelihood of sucking away the oversize material and the undersize material through the dust extraction opening 16, the dust extraction opening 16 is preferably arranged in an upper position of the screening chamber, since the oversize material and the undersize material still vibrate in the respective oversize material chamber 14 and undersize material chamber 15. Preferably, the dust exhaust port 16 is provided at the top of the case 10.

In addition, in order to avoid the dust raised during the discharging process of the oversize material and the undersize material, preferably, the linear sieve includes an oversize material discharging pipe 17 and an oversize material discharging pipe 18 extending from the oversize material outlet 12 and the undersize material outlet 13, and the oversize material discharging pipe 17 and the undersize material discharging pipe 18 both have a discharging port for discharging the material downwards and a first flexible material guiding part 50 arranged at the discharging port. Wherein, first flexible guide 50 can be flexible to the ejection of compact department of collecting, for example material section of thick bamboo 80 and undersize material section of thick bamboo 90 on the sieve, and oversize material and undersize material can fall on the inner wall of first flexible guide 50 when passing through first flexible guide 50 to the buffering blanking avoids raising the dust. The first flexible material guiding member 50 may be made of any suitable material as long as it has a buffering effect and facilitates flexible extension. For example, the first flexible material guiding member 50 may be a sleeve member made of canvas, hemp cloth, or the like.

In the present application, the vibration device 40 may be selected as needed, as long as the box 10 is vibrated to move the material from the feeding hole 11 to the corresponding discharging hole while the screening is completed. In the illustrated embodiment, the vibration device 40 includes a vibration motor 41 for providing vibration and a support bracket 42 for elastically supporting the cabinet 10. The support bracket 42 may include a rigid body and a spring elastically connecting the rigid body with the housing 10.

In this application, for make full use of screen cloth 20's whole surface screening and make things convenient for feeding, the ejection of compact, box 10 is the cuboid, feed inlet 11 sets up the top of the one end of box 10, oversize material export 12 with sieve unloading export 13 sets up the lateral part of the other end of box 10.

In order to facilitate the material to be simultaneously screened and moved towards the outlet during the vibration process, the box 10 is inclined such that the feed opening 11 is located at an end higher than the ends of the oversize outlet 12 and the undersize outlet 13. Preferably, the cabinet 10 is inclined with respect to the horizontal direction.

From the end where the feed inlet 11 is located to the other end where the oversize outlet 12 and the undersize outlet 13 are located, as the screening progresses, the undersize beneath the screen 20 increases and the undersize accumulates higher and higher, possibly to a height above the screen 20 before reaching the undersize outlet 13, and back into the oversize chamber 14. To this end, the screen 20 is preferably arranged such that the height of the undersize chamber 15 increases from the feed opening 11 to the undersize outlet 13, thereby increasing the height of the undersize chamber 15 at the discharge end as much as possible within the limited height of the screening chamber to avoid undersize from accumulating beyond the screen 20 back into the oversize chamber 14. In addition, the variation of the height of the oversize chamber 14 is opposite to the trend of the variation of the height of the undersize chamber 15, i.e. the height of the oversize chamber 14 is the largest at the feed opening 11. In the prior art, dust is also easily lifted at the feed inlet 11 when the material is poured into the feed inlet 11 and impinges on the screen 20. In the case of material balls in the material, the material balls also tend to bounce out of the feed opening 11 after hitting the screen 20. By increasing the height of the oversize chamber 14 at the feed inlet 11, the height that the material needs to overcome to overflow the fugitive dust when entering from the feed inlet 11 can be increased, further ensuring that fugitive dust does not overflow from the feed inlet 11 and also reducing the likelihood of pellet bounce.

The screen 20 may be disposed in a suitable manner to meet the height change of the material sieving chamber 15, for example, the screen 20 may be a curved surface shape, a multi-step shape, or the like, in which the height (relative to the bottom wall) gradually increases from the feeding port 11 to the discharging port. For ease of arrangement, as shown in FIG. 1, the screen 20 is planar and is disposed at an angle to the bottom wall of the housing 10. Preferably, the screen 20 is inclined by 5 ± 2 ° with respect to the bottom wall.

In the embodiment shown in fig. 1, the box 10 is inclined downwardly from the end at the inlet 11 to the end at the outlet, and to avoid accumulation of the undersize material back into the oversize chamber 14, the screen 20 is inclined relative to the bottom wall of the box 10 such that the height of the screen 20 at the end of the inlet 11 relative to the bottom wall of the box 10 is less than the height of the screen 20 at the end of the undersize outlet 13 relative to the bottom wall of the box 10, but the height of the screen 20 at the end of the inlet 11 (relative to the ground) is still greater than the height at the end of the outlet. This prevents the accumulation of the undersize material back into the oversize chamber 14 on the one hand, and slows the movement of the oversize material from the feed inlet 11 to the oversize outlet 12 on the other hand, so that the material can be sufficiently vibrated and sieved during movement.

According to another aspect of the present application, a screening device is provided, wherein the screening device comprises the linear screen of the present application and a mixing bowl 70 for feeding the feed inlet 11, and a second flexible material guiding member 60 extending to the screen mesh 20 is provided at an outlet of the mixing bowl 70.

In the screening device of the application, the negative pressure dust suction device 30 can form a negative pressure passage by utilizing the dust removal port 16, the feed inlet 11, the oversize material outlet 12 and the screening material outlet 13, so that dust at the feed inlet 11, the oversize material outlet 12 and the screening material outlet 13 cannot be diffused outwards but is collected in the screening chamber and is completely discharged through the dust removal port 16, and the overflow of the dust is thoroughly eliminated.

In order to guide the material mixing tank 70 to generate dust during feeding to the feeding inlet 11, a second flexible material guiding member 60 capable of extending from the feeding inlet 11 to the screen 20 may be disposed at the outlet of the material mixing tank 70. The material can be buffered and dropped onto the screen 20 by the second flexible material guiding member 60, so as to prevent dust from flying and material balls from being ejected, and prolong the service life of the screen 20. Wherein the end of the second flexible material guiding member 60 may extend a distance into the sieving chamber above the screen 20 so that the material will not overflow from the feeding hole 11 even if the dust is raised at a position far away from the feeding hole 11. The second flexible material guiding member 60 may be made of any suitable material as long as it has a buffering effect and facilitates flexible extension. For example, the second flexible material guiding member 60 may be a sleeve member made of canvas, hemp cloth, or the like.

The operation of the screening apparatus of the preferred embodiment of the present application will now be described with reference to the accompanying drawings.

Firstly, the material is fed to the feeding hole 11 through the mixing tank 70, and the second flexible material guiding member 60 is arranged, so that dust can be prevented from being raised when the material is poured.

The material entering from the feed port 11 first falls in the oversize material chamber 14 and on the screen mesh 20, spreads on the screen mesh 20 with the vibration of the box body 10, so that the material having a particle size smaller than the mesh of the screen mesh 20 falls in the undersize material chamber 15, and the material having a particle size larger than the mesh of the screen mesh 20 remains in the oversize material chamber 14, while, as the vibration progresses, the oversize material moves toward the oversize material outlet 12 (see hollow arrow in fig. 1) and is finally discharged into the oversize material barrel 80, and the undersize material moves toward the undersize material outlet 13 and is finally discharged into the undersize material barrel 90 (see solid single arrow in fig. 1).

Meanwhile, the suction effect of the negative pressure dust collector 30 forms a negative pressure passage (see the solid double arrow in fig. 1) through the dust removal opening 16, the feed opening 11, the oversize outlet 12 and the undersize outlet 13, so that the dust at the feed opening 11, the oversize outlet 12 and the undersize outlet 13 is collected in the screening chamber without being diffused outwards and is discharged completely through the dust removal opening 16, and the overflow of the dust is completely eliminated. During dust extraction, the dust passes through the filter 21 to intercept most of the dust, and the small particle dust is collected for further processing through the negative pressure duct 32.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited thereto. Within the scope of the technical idea of the present application, many simple modifications can be made to the technical solution of the present application. Including each of the specific features, are combined in any suitable manner. In order to avoid unnecessary repetition, various possible combinations are not described separately in this application. These simple modifications and combinations should also be considered as disclosed in the present application, and all fall within the scope of protection of the present application.

Claims (10)

1. The linear sieve is characterized by comprising a box body (10), a sieve (20), a negative pressure dust removal device (30) and a vibration device (40) for vibrating the box body (10), wherein the box body (10) is provided with a sieving chamber, a feed inlet (11), an oversize outlet (12) and an undersize outlet (13), the sieve (20) is arranged in the sieving chamber to divide the sieving chamber into an oversize chamber (14) and an undersize chamber (15), the feed inlet (11) and the oversize outlet (12) are respectively communicated with the oversize chamber (14), the undersize outlet (13) is communicated with the undersize chamber (15), the box body (10) is further provided with a dust removal port (16) communicated with the sieving chamber, and the negative pressure dust removal device (30) is connected to the dust removal port (16), to provide a negative pressure through the dust extraction opening (16) to suck the generated dust in the screening chamber and to treat the dust.

2. The linear screen according to claim 1, characterized in that the negative pressure dust removal device (30) comprises a filter (31) and a negative pressure duct (32), the filter (31) being connected to the dust removal opening (16), the negative pressure duct (32) being connected to an outlet of the filter (31).

3. The linear screen according to claim 2, characterized in that the negative pressure dust removal device (30) comprises a plurality of said filters (31), a plurality of said filters (31) being arranged to be individually openable, wherein:

the negative pressure dust removing device (30) comprises a plurality of negative pressure pipelines (32) which are respectively in one-to-one correspondence with the filters (31); and/or the presence of a gas in the gas,

the box body (10) is provided with a plurality of dust removing openings (16) which correspond to the filters (31) one by one.

4. The linear screen of claim 1, characterized in that the dust extraction opening (16) is arranged at the top of the box (10).

5. The linear screen according to claim 1, characterized in that the linear screen comprises an oversize material discharge pipe (17) and an oversize material discharge pipe (18) extending from the oversize material outlet (12) and the undersize material outlet (13), the oversize material discharge pipe (17) and the undersize material discharge pipe (18) each having a discharge opening discharging downwards and a first flexible material guide (50) arranged at the discharge opening.

6. The linear screen of claim 1, characterized in that the vibration means (40) comprises a vibration motor (41) for providing vibration and a support frame (42) for elastically supporting the casing (10).

7. The linear screen according to any one of claims 1 to 6, characterized in that the box (10) is a rectangular parallelepiped, the feed inlet (11) is arranged at the top of one end of the box (10), and the oversize outlet (12) and the undersize outlet (13) are arranged at the side of the other end of the box (10).

8. The linear screen of claim 7, wherein:

the screen (20) being arranged such that the height of the sieve material chamber (15) increases from the feed opening (11) to the sieve material outlet (13); and/or the presence of a gas in the gas,

the box body (10) is obliquely arranged, so that the end where the feed port (11) is located is higher than the ends where the oversize material outlet (12) and the undersize material outlet (13) are located.

9. The linear screen of claim 8, characterized in that the screen mesh (20) is planar and is disposed obliquely to the bottom wall of the box (10).

10. A screening device, characterized in that it comprises a linear screen according to any one of claims 1-9 and a mixing bowl (70) for feeding the feed opening (11), the outlet of the mixing bowl (70) being provided with a second flexible material guide (60) extending to the screen (20).

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